Title:
BIAXIALLY STRETCHED POLYAMIDE FILM ROLL
Document Type and Number:
WIPO Patent Application WO/2023/132230
Kind Code:
A1
Abstract:
[Problem] The present invention provides a carbon-neutral biaxially stretched polyamide film that uses a raw material derived from biomass, said polyamide film having exceptional heat resistance, impact resistance, and resistance to bending-derived pinholing. The present invention also provides a biaxially stretched polyamide film roll in which any variation in the level of biomass in the vertical (longitudinal) direction is suppressed. OMISSION ロール (in 二軸延伸ポリアミドフィルムロール) [Solution] A biaxially stretched polyamide film roll measuring 1,000–60,000 m in length and 400–3,000 mm in width, comprising a biaxially stretched polyamide film containing 99–70 mass% of a polyamide 6 resin and 1–30 mass% of a polyamide resin for which at least some of the raw material is derived from biomass, the variation in biomass content being 15% or less when samples are taken every 1000 m from the surface layer to the winding core of the film roll in the MD direction and measurements of radioactive carbon 14C are taken.
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Inventors:
TORII AYAME (JP)
GOTO TAKAMICHI (JP)
GOTO TAKAMICHI (JP)
Application Number:
PCT/JP2022/046839
Publication Date:
July 13, 2023
Filing Date:
December 20, 2022
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
B29C48/285; B29B7/24; B29C31/10; B29C48/08; B29C48/305; B29C48/88; B29C55/12; C08J5/18; C08L77/02; B29K77/00; B29L7/00
Domestic Patent References:
| WO2020170714A1 | 2020-08-27 | |||
| WO2020203106A1 | 2020-10-08 | |||
| WO2018062145A1 | 2018-04-05 |
Foreign References:
| JP2016120721A | 2016-07-07 | |||
| JP2010155455A | 2010-07-15 | |||
| JPH0847972A | 1996-02-20 |
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